Note: The novelette "Snowball" by Poul Anderson has been removed from this online copy at the request of the estate of Poul Anderson.
(Contents information excerpted from The Internet Speculative Fiction Database)
Art:
- The Strangers by Frank Kelly Freas
- Snowball by Frank Kelly Freas
- Watershed by Frank Kelly Freas
- Easy Does It by Paul Orban
- They Were Different by Paul Orban
- The Laboratorians by Ed Emshwiller
- The Outer Quiet by Ed Emshwiller
- Witness by Frank Kelly Freas
Essays:
- A Chat with the Editor (If, May 1955) by James L. Quinn
- Worth Citing (If, May 1955) by uncredited
- What Is Your Science I. Q.? (If, May 1955) by uncredited
- Science Briefs (If, May 1955) by uncredited
Novelettes:
- Easy Does It by E. G. Von Wald
- The Pacifists by Charles E. Fritch
Short Stories:
- Watershed by James Blish
- They Were Different by Neil J. Kenney
- The Laboratorians by Edward Peattie
- The Outer Quiet by Herbert D. Kastle
- Witness by George H. Smith
- Firth's World by Irving E. Cox, Jr.